Improved sceapee



FREDERICK POSTI, 0F PLANO, ILLINOIS.`

Lettere Patent No. 78,999, dated June 16, 1868.

IMPROVED SCRAPBR.

flits .rlgzhule referto tu iu time ettrrs gateau mit making putt nf the time.

TO 4ALL WHOM IT MAY CONCERN# Be it known that I, FREDERICK POST, of Plano, in the county of Kendall, and State of Illinois, have inventada new and improved Wheeled Dirt-Scraper; and I do hereby declare that the following is a. full, clear, and exact description otthe construction and operation of the-sume, reference being had to the annexed drawings, making a part of this specification, and the4 letters of'reference marked thereon.

Figure l'shows a. top view, and

Figure 2 n side view, with the scraper in different positions.

Parts lettered as follows:

'A, scraper.,

B, hind Wheels.

C,;fore wheels,`

I), crank.

E E, chains.

F, spur-wheel.

G, pinion.

H, ratchet-wheel.

I, pawl. l

J, foot-lever.

K, spring.

L, pivot.

M M, rollers.

N, bed-pieces. Y

O, front 4cross-piece.

S, rear crosspiecc.

P P l?, rails.

R, post.

T, bolster.

U, tongue.

1W, support for scraper.

I construct my improvement as follows: I make. a frame, consisting of tivo pieces, in size, say, four by Live nches,'and eight feet in length, which I will call bed-picees, and t-vro pieces of sam'e size, and, say, four feet in length, which I will cull cross-pieces. These bed-pieces are shown by N N, the front cross-piece by O, and the rear cross-piece by S. These four pieces composing this frame may be connected at the corners by a niortise und tenon, or the pieces O and S may rest upon the top of the pieces N N, as shown in fig. 2, and be secured I by bolts.

I now take three pieces, as shown by P P P ,Vgn 1, say four inches square, which I will call rails, one end of each of which I attach, by bolts or otherwise, to the cross-piece O, one being attached at euch end directly over the bedpieces N N, an'd'one in the middle of said cross-piece. To hold theserails in position, I connect them together with another cross-piece near the other end, as shown in tig. 1, thus forming a seond frame above the first, the cross-piece O,V forming part 'of each frame.

The rem' end of this upper frame I elevate, as shown in iig. 2,A and support the same by two posts, 'one'of which is shown at R, fig.,2, the other standing opposite, and not shown, the lower end of these posts resting upon the bed-pieces N N. n I

This frame I now'mount upon four \vheels, one end of the bedpiecesN N resting, as shown at T, fig. 2, upon and being'secured to another cross-piece, which serves the purpose of what is, in an ordinary wagon, termed the bolster, and attach this bolster, by means of a king-bolt, to un axle-tree, which is supported by two wheels,

the bolster beng'otsutlicient depth to elevate the bed-pieces N N above the tops of the wheels, te facilitate turning.

To this axle-tree I attach a tongue, in the same manner as upon an ordinary wagon, to which to attach a team. I also support the rear end of the bed-pieces N-N upon an axle-tree, provided also with wheels, but of a larger size, say twice as largev in diameter as those used for thefront, but between these bed-pieces N. N and i the axle-tree, to elevate the rear end as high as the end which rests .upon the bolster ofthe fore wheels, I

. the pinion Gr tov come together, andtheir cogs to match.

insert a blocker piece, of the shape asV shown at W, which I allow to extend forward, underneath and fastened securely to the bed-piecesNN, a suicient distance to form a bearing for. the hinges of the scraper, as hereafter A described.

I now make suitable bearings through the three pieces of the upper frame, marked P, near their rearend, and insert a. shaft, upon one end of which I secure a spur-wheel, as shown at F, and the other end a ratchetwheel, as shown at H. I also put upon this shaft, in ther spaces between the rails, marked P, two rollers, as shown at M M, for purposes hereat'ter described. I now form suitable bearings through two of these rails,

marked I, and insert another shaft, upon one end ot' which I place apinion, as shown at G, and the other enda crank, as shown at D, the relative position of these two shafts being such 'es to allow the spur-wheel F and I now construct a pawl, as shown at I, to act upon also, 4to the post R, the spring K, tonact upon the pawl, and hold it in position.

the ratchet-wheel H, which pawl I secure to the post RI i Y by the-pivot L, allowing the pawl to extend beyond the pivot, and form a foot-lever, as shown at J, and attach I now erect at the rear 'end of the frame thus described, and convenient to the crank, D, and the foot-lever J, a seat, as shown at X. u v

I now construct a. scraper, of any suitable material, and of a shape essentially the same as shown by the part marked A in iigs.`1 and 2, with a cutting-edge in front, and ot' a size suicient to receive earth enough to make a load for an ordinary team. l This scraper I place beneath the bed-pieces N, in front 'of the rear axlctree, and-secure it by means of bolts to the pieces for that purpose, marked W. I insert these bolts through holes in the sides of the scraper, in such a manner as to form hinges or .pivots upon which the scraper may turn,

and allow its front portion to be raised or lowered when desired. I now connect the front of this scraper-with l the rollers by means of two chains, as shown at E E.

The operation of my improvement is as follows: The driver, occupying the seat X, upon approaching the earth to be removed, adjusts the scraper to the position as sho'wn lin tig; Q, atA, the cutting-edge lowered a suilicient distance to come in contact with and cut its way beneath the surface of the earth, and as the scraper is drawnforward, the earth thus disconnected by the cutting-edge is forced back intothc cavity in the scraper until a load is obtained, when the driver, seizing the crank, D, and turning the shaft and pinion G, which, con'- necting with the spur-wheel, F, causes the shaft and pulleys M M to revol've,-and windingthe chains E E'around those pulleys, and elevating'the front of the scraper until it no longer comes in contact with the earth below, and causing itto assume a position as shown by red lines in iig. 2, in which position it is held bythe pawl I and the'ratchet-wheel H.

By this means the scraper is suspended beneath the frame, andthe whole weight of the scraper and its contents supported by the wheels, when the load can be easily conveyed to its destination. To deposit the'load, the-driver turns the crank still further in the same direction, and by this means elevates the front of the scraper, as shown by .blne; l ines in iig. 2, or until the load falls ont atthe rear end of the scraper.

Upon again arriving at the place where the load is taken, the driver presses his foot against the foot-lever J, with sullcient force -to overcomethe pressure of the spring K, and disconnect the pawl I from the ratchetwheel H, and allow the chains E E to unwind from the rollers M M, and the scraper to resume its irst position, andbe in readiness to receive its load. A

Now, in loading this scraper,.the driver is enabled, by means of the leverage obtained by the crank, D, the spur-wheel F, and pinion G, to regulate easily, by raising or lowering the front of the scraper, the depth proper for it to cut, and adapt its depth to the hardness of the soil vand the strength of the team.

What I claim as my invention, and desire to secure by Letters Patent, is

The combination of the scraper A, chains E, rollers M, ratchet-wheel H, ratchet I, spur-wheel F, pinion G, and crank, D, all constructed substantially as described, and operatingas specified.

FREDERICK POST.

Witnesses:

A. Srnwsnn, A. N. Bnnn. 

